18874996

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 41368320

約数和(自身を除く): 22493324

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 53, 79, 92, 98, 106, 158, 161, 196, 212, 316, 322, 371, 553, 644, 742, 1106, 1127, 1219, 1484, 1817, 2212, 2254, 2438, 2597, 3634, 3871, 4187, 4508, 4876, 5194, 7268, 7742, 8374, 8533, 10388, 12719, 15484, 16748, 17066, 25438, 29309, 34132, 50876, 58618, 59731, 89033, 96301, 117236, 119462, 178066, 192602, 205163, 238924, 356132, 385204, 410326, 674107, 820652, 1348214, 2696428, 4718749, 9437498, 18874996]

約数ペア:

[(1, 18874996), (2, 9437498), (4, 4718749), (7, 2696428), (14, 1348214), (23, 820652), (28, 674107), (46, 410326), (49, 385204), (53, 356132), (79, 238924), (92, 205163), (98, 192602), (106, 178066), (158, 119462), (161, 117236), (196, 96301), (212, 89033), (316, 59731), (322, 58618), (371, 50876), (553, 34132), (644, 29309), (742, 25438), (1106, 17066), (1127, 16748), (1219, 15484), (1484, 12719), (1817, 10388), (2212, 8533), (2254, 8374), (2438, 7742), (2597, 7268), (3634, 5194), (3871, 4876), (4187, 4508)]